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I. Mechanism of Silicon Steel Magnetic Properties

Silicon steel serves as the invisible magnetic framework of electromagnetic equipment, and its saturation magnetization determines the operating efficiency of transformers and motors. This parameter represents the maximum magnetization level the material can reach under strong magnetic fields. The saturation magnetization of thép silic generally ranges from 2.0 T to 2.2 T (Tesla). Notably, every 1% increase in silicon content reduces saturation magnetization by approximately 0.01 T, yet drastically cuts eddy current loss — this explains why power transformers favor high-silicon thép silic.

II. Industrial Reference of Measured Data

In practical applications, cold-rolled non-oriented silicon steel features a typical saturation magnetization of 2.03 T, while grain-oriented silicon steel can reach 2.15 T. Key selection notes:

• Thickness impact: 0.3 mm thin sheets deliver around 5% better magnetic performance than 0.5 mm gauges.
• Temperature effect: Saturation magnetization drops by 0.5%–1% per 100 °C temperature rise.
• Stress sensitivity: Annealing treatment is recommended after mechanical processing to restore magnetic performance.

III. Optimal Balance for Practical Application

Pursuing ultra-high saturation magnetization is not universally applicable; trade-offs must be considered:

• Silicon content above 3.5% causes material embrittlement.
• For high-frequency applications, core loss takes priority over saturation magnetization.
• Medium-grade silicon steel with saturation magnetization of 1.8–2.0 T is recommended for motor core laminations.